Home / 13,969.39-20,954.19-5,647.85

Finding the Fourth Proportional to 13,969.39, 20,954.19 and 5,647.85

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Solution

The fourth proportional to 13,969.39, 20,954.19 and 5,647.85 is: 8,471.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.39 : 20,954.19 = 5,647.85 : x
  2. Step 2: Convert to fraction form
    13,969.39/20,954.19 = 5,647.85/x
  3. Step 3: Cross multiply
    13,969.39x = 20,954.19 × 5,647.85
  4. Step 4: Simplify right side
    13,969.39x = 118,346,093.75
  5. Step 5: Solve for x
    x = 118,346,093.75/13,969.39
  6. Step 6: Final answer
    x = 8,471.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.